<?php
/**
* Server-side rendering of the `core/comments-title` block.
*
* @package WordPress
*/

/**
* Renders the `core/comments-title` block on the server.
*
* @since 6.0.0
*
* @param array $attributes Block attributes.
*
* @return string Return the post comments title.
*/
function render_block_core_comments_title( $attributes ) {

if ( post_password_required() ) {
return;
}

$align_class_name = empty( $attributes['textAlign'] ) ? '' : "has-text-align-{$attributes['textAlign']}";
$show_post_title = ! empty( $attributes['showPostTitle'] ) && $attributes['showPostTitle'];
$show_comments_count = ! empty( $attributes['showCommentsCount'] ) && $attributes['showCommentsCount'];
$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $align_class_name ) );
$comments_count = get_comments_number();
/* translators: %s: Post title. */
$post_title = sprintf( __( '&#8220;%s&#8221;' ), get_the_title() );
$tag_name = 'h2';
if ( isset( $attributes['level'] ) ) {
$tag_name = 'h' . $attributes['level'];
}

if ( '0' === $comments_count ) {
return;
}

if ( $show_comments_count ) {
if ( $show_post_title ) {
if ( '1' === $comments_count ) {
/* translators: %s: Post title. */
$comments_title = sprintf( __( 'One response to %s' ), $post_title );
} else {
$comments_title = sprintf(
/* translators: 1: Number of comments, 2: Post title. */
_n(
'%1$s response to %2$s',
'%1$s responses to %2$s',
$comments_count
),
number_format_i18n( $comments_count ),
$post_title
);
}
} elseif ( '1' === $comments_count ) {
$comments_title = __( 'One response' );
} else {
$comments_title = sprintf(
/* translators: %s: Number of comments. */
_n( '%s response', '%s responses', $comments_count ),
number_format_i18n( $comments_count )
);
}
} elseif ( $show_post_title ) {
if ( '1' === $comments_count ) {
/* translators: %s: Post title. */
$comments_title = sprintf( __( 'Response to %s' ), $post_title );
} else {
/* translators: %s: Post title. */
$comments_title = sprintf( __( 'Responses to %s' ), $post_title );
}
} elseif ( '1' === $comments_count ) {
$comments_title = __( 'Response' );
} else {
$comments_title = __( 'Responses' );
}

return sprintf(
'<%1$s id="comments" %2$s>%3$s</%1$s>',
$tag_name,
$wrapper_attributes,
$comments_title
);
}

/**
* Registers the `core/comments-title` block on the server.
*
* @since 6.0.0
*/
function register_block_core_comments_title() {
register_block_type_from_metadata(
__DIR__ . '/comments-title',
array(
'render_callback' => 'render_block_core_comments_title',
)
);
}

add_action( 'init', 'register_block_core_comments_title' );